Bernie Sanders and Joe Biden have both canceled their campaign rallies planned for Tuesday night in Ohio, due to concerns about the coronavirus. These cancellations are the first on the 2020 presidential campaign trail, as concerns about the outbreak mount.

Sanders’ campaign communications director Mike Casca said in a statement: “Out of concern for public health and safety, we are canceling tonight’s rally in Cleveland. We are heeding the public warnings from Ohio state officials, who have communicated concern about holding large, indoor events during the coronavirus outbreak.”

Kate Bedingfield, deputy manager for the Biden campaign, said in a statement: “In accordance with guidance from public officials and out of an abundance of caution, our rally in Cleveland, Ohio, tonight is cancelled.”

A debate scheduled for Sunday in Phoenix between Sanders and Biden is currently scheduled to proceed, but the Democratic National Committee and CNN, which is hosting the debate, have said they are in contact with local officials and will follow their guidance.